Views: 0 Author: Site Editor Publish Time: 2026-01-29 Origin: Site
Accurate gas analysis depends heavily on reliable sample conditioning. A dedicated gas sample heat exchanger is a critical component in analytical systems, designed to cool hot, moisture-laden gas streams, remove condensable water, and deliver a stable, dry sample to downstream analyzers without altering gas composition. The heat exchanger described below is engineered specifically for demanding gas analysis applications in power generation, chemical processing, environmental monitoring, and industrial emissions control.
In many industrial processes, extracted gas samples are at elevated temperatures and high dew points, often containing significant water vapor or liquid water. If not properly conditioned, these conditions can damage analyzers, skew measurements, or cause corrosion and plugging.
This gas analysis heat exchanger performs three essential functions:
Rapid Cooling of Hot Gas Samples
It reduces the gas temperature to a controlled level, enabling moisture condensation in a predictable and manageable way.
Efficient Moisture Removal
Condensed water is separated and discharged through a bottom drain, protecting analyzers and sample lines.
Preservation of Gas Composition
The design minimizes soluble gas losses, ensuring analytical accuracy for critical components such as NO, NO₂, SO₂, CO, and CO₂.
To accommodate a wide range of process conditions, the heat exchanger is available with different wetted materials:
Glass / Kynar (PVDF) Heat Exchangers
Maximum inlet sample temperature: 280°F (138°C)
Ideal for corrosive gases and applications requiring chemical resistance.
Stainless Steel Heat Exchangers
Maximum inlet sample temperature: 700°F (371°C)
Suitable for very high-temperature, harsh industrial environments.
This flexibility allows the system to be matched precisely to the process gas characteristics.
The heat exchanger is designed to handle challenging moisture conditions commonly found in flue gas and process gas streams:
Maximum inlet gas dew point: 180°F (82°C)
Maximum inlet water concentration: 50%
Outlet sample dew point: 39.2°F (4°C)
By reducing the dew point to near-freezing levels, the system ensures reliable downstream analysis and long-term analyzer stability.
Reliable performance is maintained across typical industrial installation environments:
Minimum ambient temperature: 34°F (1°C)
Maximum ambient temperature: 105°F (41°C)
This range supports both indoor analyzer shelters and protected outdoor installations.
The heat exchanger is designed for easy integration into standard gas sampling systems:
Gas sample inlet fitting: 3/8" tubing fitting
Gas sample outlet fitting: 1/4" tubing fitting
Bottom water drain fitting: 3/8" tubing fitting
These standardized connections simplify installation and maintenance.
Power supply: 115/230 VAC, 50/60 Hz
Electrical classification: General Purpose
The unit is suitable for non-hazardous locations and can be readily integrated into existing analyzer panels or conditioning cabinets.
Maintaining analytical accuracy is critical. This heat exchanger is engineered to minimize soluble gas absorption during condensation:
NO: 0% loss
NO₂: <10% loss
SO₂: <2% loss
CO: 0% loss
CO₂: <2% loss
These low loss rates make the exchanger well suited for regulatory and process-critical measurements.
To preserve performance and material integrity, the heat exchanger should be stored under controlled conditions:
Storage temperature: -20°F to 120°F (-29°C to 49°C)
Relative humidity: <95%, non-condensing
Storage environment: Cool and dry location
This gas analysis heat exchanger is widely used in:
Continuous Emissions Monitoring Systems (CEMS)
Combustion and flue gas analysis
Chemical and petrochemical process monitoring
Environmental monitoring stations
Industrial safety and process control analyzers
A properly engineered heat exchanger is essential for accurate and reliable gas analysis. With high temperature capability, excellent moisture removal, minimal soluble gas loss, and robust construction options in glass/Kynar or stainless steel, this heat exchanger provides dependable performance across a wide range of industrial gas analysis applications. It ensures that analyzers receive clean, dry, and representative samples, supporting precise measurement and long-term system reliability.
